SHA256Digest返回一个奇怪的哈希

Question

在BlackBerry应用程序中,我使用此代码以从密码获取哈希:

        SHA256Digest sha256d = new SHA256Digest();
        byte[] passwordData = null;

        try {
            passwordData = password.getBytes("UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        DigestOutputStream outputStream = new DigestOutputStream(sha256d, null);
        try {
            outputStream.write(passwordData);
        } catch (IOException e) {
            e.printStackTrace();
        }

        byte[] hashedValue = sha256d.getDigest();
        tempSHA256Password = new String(hashedValue);
        System.out.println(tempSHA256Password);

在这个代码块的末尾,tempSHA256Password它将是这样的东西:ëÇ#ÎiGê8óq =ßÝ÷<rê¨_FR»ã...所以绝不是我所期待的.我期待一个看起来像这样的字符串:ebc723ce6947ea38f371a03d0cdfddf73c840f7215eaa85f031446529bbb16e3

我究竟做错了什么？

Answer 1

的insted的tempSHA256Password = new String(hashedValue); 试试这个代码:

StringBuffer buffer = new StringBuffer();
for(byte b : hashedValue)
{
    buffer.append(String.format("%02x",b<0 ? b+256 : b));
}
tempSHA256Password = buffer.toString();